#Keynes reasoned in the GT “Income = value of output = consumption + investment. Saving = income − consumption. Therefore saving = investment.” (p. 63)
— E.K-H (@AXECorg) March 12, 2021
This syllogism is provably false but After-Keynesians did not realize anything bc they are too stupid for elementary logic.
For details of the big picture see cross-references Refutation of I=S and cross-references Math/Mathiness and Ch. 13, The indelible scientific disgrace of economics, in Sovereign Economics.